Multiple totalizer cash register



f Oct. 13, 1936. K. A. LEHMANN ET Al. 2,057,438

' MULTIPLE TOTALIZER CASH REGISTER Filed July 31, 1928 15 Sheets-Sheet 1Admrion Oct. 13, 1936.

allai' l im oumf Keys (Fen K. A. LEHMANN ET Al.

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1928 l5 Sheets-Sheet 2afar/ffy@ J Zero/'zing OCL 13 1936. K. A. LEHMANN ET AL 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1928 15 Sheets-Sheet 3Oct. 13, 1936. K. A. LEHMANN ET AL 2,057,438

MULTIPLE TOTALIZER CASH REGISTER I Filed July 3l, 1923 l5 Sheets-Sheet 4mw am oct. 13, 1936. K. A. LEHMANN ET AL 2,057,433

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1923 15 Sheets-Sheet 5OC- 13, 1936- K. A. LEHMANN ET AL 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 5l, 1928 l5 Sheets-Sheetl 6Oct. 13, 1936. K. A. LEHMANN ET AL MULTIPLE TOTALIZER CASH REGISTERFiled July 31, 1928 15 sheets-sheet 7 Oct. 13, 1936. K. A. LEHMANNET'AL. 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1928 l5 Sheets-Sheet 8Oct. 13, 1936. K. A. LEHMANN ET AL 2,057,438A

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1928 l5 Sheets-Sheet 9 A2f@ 172 T Oct. 13, 1936.

K. A. LEHMANN ET AL. MULTIPLE TOTALIZER CASH REGISTER Filed July 3l,1928 l5 Sheets-Shea?I l0 JM 22 W Oct. 13, 1936. K. A. LEHMANN ET AL2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July :51, 1928 15 sheets-smet 11Oct. 13, 1936. K` A. LEHMANN ET Al. 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1928 l5 Sheets-Sheet J2Oct. 13, 1936. K. A. LEHMANN ET AL 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 3l, 1928 l5 Sheets-Sheet 13ct. 13, 1936. l KL A. LEHMANN ET AL 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 5l', 1928 15 Sheets-Sheet 14Oct. 13,1936. K. A. LEHMANN ET'AL 2,057,438

MULTIPLE TOTALIZER CASH REGISTER Filed July 43l, 1928 l5 Sheets-Sheet 15Patented Oct. I3, 1936 PATENT oI-FlcE MULTIPLE TOTALIZER CASH REGISTERKarl August Lehmann and Ernst Breitling, Essen,

Germany, assignors, by mesne assignments, to` The National Cash'Register Co., Dayton, Ohio, a corporation of Maryland Application July31, 1928, Serial No. 296,445

6 Claims.

The invention relates to cash registers having a plurality of specialtotalizers to separately record totals of items such as different kindsof taxes, and to also record a total of the transactions entered by thediierent clerks operating the machine. It further relates to that typeof machine in which the grand total of all these totalizers, or ofcertain groups thereof, is accumulated and taken.` In cash registers ofthis type now in use a grand totalizer is provided'which accumulates thetotal of the amounts on the various special totalizers, by being engagedduring the operations in which the items are entered on the varioustotalizers. In this manner a grand total of the separate totals on' thespecial totalizers is accumulated during the course of business.

With the invention, however, `the amounts accumulated in the specialtotalizers are accumulated into a grand total by a series of successivetotal transferring operations at the end of a business day.

'Ihe use of this method has the advantage of requiring only one main orgrand totalizer to accumulate a grand total of the amounts in all thespecial totalizers, or of the amounts in any particulargroup orsub-group thereof, whereas in many of the machines now in use a separatemain totalizer must be employed for each group or sub-group of specialtotalizers. The patent to Shipley, No. 1,626,880, is illustrative of anar-n rangement wherein two main totalizers are provided for two groupsof special totalizers.

This method has the additional advantage of not requiring the use of themain totalizer during the course of business, so that this totalizer isfree to be used for separate accumulation during this period. i

The use of this method furthermore does not duplicate the work of theoperator, as it might at first seem, since the same number of operationsused to transfer the totals from the special totalizersis necessary, inthe normal use of machines of this type, to clear the totals from thesetotalizers and to record the amounts that were standing thereon.

To realize the chief idea of the invention a series of auxiliarymechanisms `are required which substantially consist in mutual blockingand detent mechanisms for the setting means of the totalizers.

In order that the invention may be more easily imderstood, an embodimentof the same is illustrated by way of example in the drawings thataccompany and form part Vof this specification. In these drawings:

Germany August 12, 1927 (Cl. 23S-7) n Figures 1 to 7 are diagrammaticillustrations of the setting mechanism, with diierent adjustmentsthereof,

Figure 8 is a side view of the amount setting mechanism with theappurtenant differentially actuating mechanism and totalizers,

Figure 9 is a section online IX-IX of Figure 8,

Figure l0 is a side view of the totalizer selecting key settingmechanism with the appurtenant differentially actuating mechanism.

`Figure 11 is a front view, partly in section, of a totalizer packet andof the main totalizer,

Figure 12 is a longitudinal section through the setting mechanism forthe totalizer controlling mechanism,

Figure 13 isa side view of the mode of operation lever for theindividual totalizers,

Figure 13a is a perspective view of the actuating and locking discsshown in Figure 13,

Figure 13b is a perspective view of the actuating and locking discsshown in Figure 12 which control the engagement of the main totalizerwith the driving mechanism,

Figure 13e is a. side view of Figure 12 along the mode of operationcontrolling discs for the main totalizer,

Figure 13d is a side view of a detail shown in Figure 21, and l Figures14 to 30 are details of the blocking mechanisms.

Setting and differentially actuating mechanisms and totalizers The cashregister hereinafter described is intended to be preferably used in taxoillces and the like. The problems to be realized in oiices of thischaracter in particular consist in separately accumulating each amountintroduced in two totalizers according to the kind of the tax and to.the mode of payment and to take both the totals and sub-totals from thetotalizers allotted to the individual kinds of taxes and modes ofpayment, and the grand total of the totalizers that accumulate thesekinds of taxes and modes of payment. Besides, it must be possible totake the total of a series of entries. involved in a single transactionmade during the business day in contradistinction to the totals taken atthe end of the day.

The setting mechanism of the machine comprises four rows of amount keysI0, Figure 1, three rows of totalizer keys |02, one row of motor keysI6i and two mode of operation levers denoted T and O. which determinewhether such operations amount of the tax which is introduced by theminto two totalisers. One of these totalizers is allotted to the kinds oftaxes and is selected by the totalizer keys I to 10, while the other ofthese totalisers belongs to the mode of payment (cash. post money order,bank order or the like). The selection of this totalizer ls made bymeans of the totaliser keys A to N.

The motor keys enect the release of the machine operation and control atthe same time the engagement of the selected totalizers and the maintotalizer. In particular, key M causes the engagement of the selectedtotalizers, key T' that of the selected totalizer-s and of the maintotalizer, and key Tx the engagement of the main totaiiser alone.

The mode of operation lever 0 determines the operations addition,reading oi! (sub-total) or seroizing (end total) of the engaged specialtotalisers, while lever T determines the operations addition orzeroizing. (end total) of the main to talixer. When e. g'. the levers Oand T are set to adding and key M is depressed, the amount introduced bythe amount keys I0 is transmitted to only the two special totaliaersthat have been selected by the keys |02. However,V upon depressing. keyT', instead of M. the transmission takes place also to the maintotalizer. Upon depressing the 'I'X key, instead of either the keys T'or M. the amount is entered only into the main totalizer. When the leverT is set to zeroising, then, upon depressing key Ts', the total is takenfrom the main totalizer. The machine operates in this manner because thedepression of keys T or T: engages the main totalizer for operationwhereas the depression of key M does not. When the sub-total is to betaken from a totalizer selected by the respective lever A, the lever Ois set to reading on and key M is depressed. In order to form at the endef the business time the total of the amounts oi the totalisers of eachtotalizer group (I to I I and A to N.-the totals of both groups must beequal to one another) that is total of the amounts introduced in themachine. lever O is set to zeroising, lever T to addition and key T' isdepressed. These manipulations result in the total being taken from thetotalizer that has been selected by means of a totalizer lever A. and,further, the additive transmission of the total taken to the maintotalizer. The taking of the total from the mainl totalizer then takesplace, as mentioned above, by setting lever T to zeroizing anddepressing the key Tr. 'Ihe total taking operations are prepared by anidle operation that is released by the blank key Bl. 'I'hese totaltaking operations at the end of the business day provide a check forentries made in the special totalizers of the two groups during the day.The main totaliner does not take up the totals of these groups ofspecial totalisers until the end of the businss day. It is in a zeroiaedcondition before the total taking operations are initiated. 'Ihis maintotaliser is available for the totalizing of composite entries duringthe course of the business day.

It may be noted that only the above-indicatedlottecltothetotalizerkeysIto Ilservingtorecord the kinds of taxes, whilethe packet III is allotted to the keys A to N destined to record themodes of payment.

In each of these packets the counting wheels el, Figure 11. of the ninetotalizers are arranged side by side on a shaft 0|, the wheels 00 of theunits, tens etc. order being united and mounted onrrthe hub Il of adifferential wheel 00, Figures "1l and 10, which may be brought intomesh with an intermediate wheel 00, Figures 8 and 10. by rocking therespective totalizer packet. The intermediate wheel 20 is in connectionthrough an-y other intermediate wheel with a differential wheel Itcommon to all dinerential wheels 00 of the respective order. 'I'hedifferential wheels 00 may be connected to the counting wheels 00 of oneof the nine totalizers of the packet by riders B0, Figure 11, rotatablybut not shiftably mounted on shaft 0| and co-operating with inside teethIl of the counting wheels 80 and with a longitudinal groove u of hub ll,the riders 66 being set to the respective counting wheels 60 by theshaft 0I being shifted.

'Ihis shifting motion of shaft 8| is caused by a step-notched drum Ils,Figure l2, the step notch |2| of which is engaged by a roller |24mounted on a sleeve |20. The latter is connected to a plate |20 that soengag an annular groove of the rider shaft 8|, that the latter is forcedto take part in the sideways shift of the plate |20. without beingimpeded from partaking of the rocking motion about the bearing shaft l2,Figures 11 andy 12. to set the totalizer packet into operative position.

'Ihe rotation of the drum Il! required to select a totalizer iseffected, in introducing an amount. by the operation of the machine,after one of the keys |02, Figure l, of the respective row haspreviousiy been depressed; in taking a total, however, it is eecteddirectly by hand by setting the appurtenant lever A.

'I'he totalizer keys |02 are arranged. like the amount keys I0 and themotor keys It l, in known manner concentrically with a shaft Figure 10,on which are mounted the differential member |00 and the companiondifferential member lill. 'Ihe members |00, IM are so interconnected bya bevel wheel differential gear |01, |00. |00, Figures and 12, mountedon a shaft 22. that they are moved in known manner from both sides tothe foot of the depressed key |02, Figure 10, by rotation of shaft 22 onwhich the bevel wheel |00 of said gear is rigidly ilxed, and arereturned by shaft 22 rotating reversely. In so doing, the members |08,|04 take between them the pin H2, Figures i0 and 12, of a setting memberH0, loose on shaft for the indicating and type wheel and set this memberlikewise according to the depressed key |02. The setting member ||0 isrigidly connected to a segment H2. Figures 10, l2. by a hub Hl, Figure12. The segment llt is in mesh by a series of upper teeth |40, Figure10, with a pinion |41 mounted on a shaft l, and by a lower series ofteeth with a pinion lll, Figures 10, l2, mounted on the shaft 22. Thepinion If 5 is connected through a hub ||6, Figure 12, to a toothedsegment ||1 that engages a pinion ||8 carried by the step-notched drumof the totalizer packet in consideration. Owing to this arrangement uponthe rotation of shaft 22 taking place during the operation of themachine, also the drum ||9 is set according to the key depressed in theappurtenant row of keys |02, whereby the rider shaft 6| is shiftedsideways and the totalizer corresponding to the depressed key |02 iscoupled with tlie differential wheels 65, Figure 11.

A key locking mechanism is provided in each row of the totalizer keys|02, Figures 10 and 12, which is formed by rocking Ilevers |63 pivotedon pins |62. A zero stop pawl |61, |68 is pivotally mounted on pin |66near the uppermost rocking lever |63, Figure 10, the upwardly directedarm |61 of which pawl under the action of a spring |64 abuts on theuppermost rocking lever |63, while the' lower hook-shaped arm |68 of the-pawl engages a segment |1| 'rigidly connected to the differentialmember |03 and'holds the latter in position of rest as long as no key|02 is depressed. Upon depressing a key |02, a lateral pin |12 fastthereon penetrates between the adjacent rocking levers |63, whereby thezero stop pawl |68 executes a rocking motion in clockwise directionabout pin |66 and thereby releases the differential member |03. Therocking amplitude of the pawl |68 is so limited,`that only one singlepin |12 is able to penetrate between the rocking levers |63, so that asimultaneous depression of more thanone key of the row is renderedimpossible. Similar mechanisms are provided with the rows of amount keys|0 and with the row of motor keys? |6I. This latter row howeverpossesses only a lever |13, Figure 19, instead of a zero stop pawl, andthe key denoted by Bl does not co-operate with the key excludingmechanism. Besides the described key excluding mechanism releasablelocking means (not shown) are provided in each row of keys, which -meanslock the keys in depressed position unt1l they are released at the endof the machine operation. The levers A, Figure 10, loosely mounted onshaft are held in the position to which. they are moved by a resilientpawl |43 engaging a series of notches |48 provided on the narrow frontfaces of the levers A. On the rear the levers A carry a series of teeth|45 co-operating with the pinion |41. In the position of rest of thelever A, Figure 10, the teeth |45 are out of gear with the pinion |41.As soon, however, as the lever A 1s moved from position of rest, theteeth |45 en- -gage pinion |41 and position it and therewith thestep-notched drum ||9 positively connected thereto according to that key|02 beside whlch the lever A has been set. As the setting members ||0,which-as described are secured to segments ||3 permanently in mesh withthe pinions |41 by the teeth |40, remain, between operations, in theirpositions imparted to them in the preceding operation, special meansmust be provided to permit the teeth |45 of lever A to engage the pinion|41 only if the setting members ||0 and segments ||3 are in theiruppermost or home position. This object is obtained by an idle operationof the machine being executed before the nrst depression of a lever A,in which operationV all setting members I0 are moved to their homeposition above mentioned. Special interlocking means for enforcing-thisidle operation previous to a setting of totalizer levers A is describedhereinafter. Levers A are blocked against movement until an idleoperation renders free the mode of operation levers T and O, the settingof which releases the levers A. Thus assurance is had that the controlexercised by the levers A upon the setting members is initiated whenthose members are in their home position.

The amounts introduced by the keys |0, Figures 1, 8, 9, are transmittedto the differentially actuating wheels 38, Figure 8, by the amountdifferential mechanism. This mechanism is designed in a manner similarto that of the described totalizer key differential mechanism. Itconsists of the differential member |2 mounted on the shaft Iand of thecompanion differential member |4, said two members being so connectedwith one another by means of a differential gear 24, 26, 25 arranged onthe shaft 22, that upon shaft 22 rotating, they are moved from bothsides like tong jaws toward the foot of the` depressed key l0, wherebythey take with them the pin 48 into a; position corresponding to thedepressed key, the setting member 41, Figure 9, actuating the respectiveindicating and type wheel. The

differential wheels 38, common to all totalzer` packets, are in rigidconnection with the bevel wheels 24 of the differential gear, whichWheels are positively connected with the differential members 2 by thesegment |1, so that the differential wheels 38 are rotated correspondingto the depressed amount keys |0 in each differential operation.

The engagement of the differential wheels 65, Figure 8, with theintermediate wheels 36 is established by rocking the shaft 12 on whichthe totalizer frames 35 are rigidly fixed. To this end an arm 15,Figures l0, 12, rigid on shaft 12 embraces by two rollers 16 aneccentric 11 fast on a shaft 14. The three shafts 14 of the threetotalizer packets I, II, III are in mesh through Wheels 18, Figure 12,with a common wheel 19, which is xed on a sleeve 8| shiftably mounted onshaft 22 and carries a crown of actuating teeth 62 and a crown oflocking teeth 83. The actuating teeth 82 are adapted to co-operate withthree actuating members 81, 88, 89, Figure 13, each carrying two pairsof actuating `teeth IUI, Figure 13. The locking teeth 83 (3o-operatewith correspondingly designed locking discs 84, 85, 85 in the manner ofa Maltese cross locking device. The locking members and actuating discs84 to 89 are rigid on shaft |I. The sleeve 8| may be shifted by the modeof operation lever O, Figures 13, 12, mounted on shaft in such a manner,that the teeth 82 will lie in the plane of any one of the threeactuating members 81 to 89 while at the same time the teeth 83 Will liein the plane of the corresponding locking members 84 to 86. This shiftof sleeve 8| is obtained by a stepnotched'segment 91, Figure 12, rigidlyconnected to lever O, Figure 13, the step notch 96 of which segment isengaged by a roller 95, the pivot of which is rotatably but notshiftably connected to sleeve 8|. During the operation of the machine,where one full revolution is imparted to shaft a full revolution,composed of two sections of 180 degrees each, is imparted to shaft 14,Figure 12, by the actuating and locking members 84 to 89, whichrevolution acts in such a manner on the totalizer packets I, II, III,Figure 10, through the eccentrics 11, that by the first section of thisrotation the packets are rocked into gear and by the other section theyare rocked out. These sectional rotations take place at different times,according to which pair of the actuating and locking members 88 to 88,Figure 12, is in mesh with the teeth 82, 88.

In the position of rest, corresponding to .Addition". oi' the mode ofoperation lever O, Figures l2, i3. the throwing into and out oi' gear ofthe totalizer packets is determined by the members 88, 81 belonging tothe adding operation; in the position Reading oi!" of lever O. by themembers 88, 88 belonging to the operation of taking a sub-total; and inthe position Zeroizing", by the members 88, 88 belonging to theoperation oi' taking the grand total. Consequently, in the first case(addition) the packets are thrown-in before the beginning of the returnmotion of the amount diiierential members 88, Figure 10, and arethrown-out at the end of this motion; in the second case (reading of!)the packets are thrown-in before the beginning of the forward motion ofthe differential wheels 88 and thrownout after their return motion hasbeen terminated; while in the third case (zeroizing) they are thrown-inbefore the beginning of the forward motion of wheels 88 and thrown-outafter this forward motion has been terminated. In adding operations theamount set by the amount keys |8 is transmitted to the totalizers thathave been selected by means of the amount keys |82. In reading ofi', thetotal contained in the totalizers thrown-in by means of the levers A istransmitted to the indicating and printing mechanism, the countingwheels being returned to the position they assumed before reading oi. Inzeroizing. however, the counting wheels remain in zero position afterthe total has been transmitted to the indicating and printing mechanism.

The main totalizer is lodged in the portion denoted by IV, Figure 10, ofthe machine. Its construction is similar to that of the totalizerpackets I to III. Instead of nine counting wheels. however, only onecounting wheel |18, Figure 11, is provided in each order, which wheelmay be coupled with the differential wheel |18, that cooperates with theappurtenant intermediate wheel 36, by means of a rider |16 by the ridershaft |11 being shifted. This shifting motion of shaft |11 to throw themain totalizer into and out of gear is obtained by means of a specialstep-notched drum |19, Figure l2, which is connected with the shaft |11in a manner similar to the connection of drum I|8 with the rider shaft6|, viz. by a roller |8|, Figure 10, a shiftable sleeve |82, and a plate|83. 'I'he drum |19, Figure 12, is mounted on a shaft |88 and is inpermanent connection with a disc |89 through a crown of teeth |88,Figure 12, a segment |81 mounted on shaft 22 and a pinion |88 connectedto the segment, which disc |88 is rigidly connected by a hub |9| withthe setting member |82 of the motor key board IBI.

'Ihe differential mechanism of the motor key board is designed like theamount differential mechanism. The two diierentially actuating members|83 and |98, Figure 12, interconnected through a differential gear |85,`|98, |91, are moved from both sides toward the foot of the depressedmotor key |8| by the rotation of shaft 22 and thereby adjust the settingmember |82 together with the indicating and type wheel connected theretocorresponding to the depressed motor key. The step notch |98 oi` thedrum |19 is cut in such a manner, that the main totalizer is thrown outof gear upon the setting member |82 being set to the keys Bl and M,Figure l, and is thrown into gear upon these members being set to thekeys T' and Tx. The selection of the mode of operation of the maintotalizer is performed by special locking and actuating dises' 28| to288 mounted on shaft and cooperating in the manner of a Maltese crosslocking device with crowns of locking and actuating teeth 288. 288 of ashifting sleeve 288 that is connected with a toothed wheel 281. Thelatter is in mesh with a wheel 288 fast on shaft |88. This shaft earrieson its other end an eccentric r2| I, Figure i0, co-operatlng with tworollers 2|8 of the rocking shaft 2|8 of the totalizer frame 2|8 of themain totalizer. The sleeve 288, Figure l2, is in connection through aroller 2|8, with a step-notched segment 2|1, on which the mode ofoperation lever T for the main totalizer is rigidly fixed. This mode ofoperation controlling mechanism acts in a manner similar to thatallotted to the special totallzers. In the home position of the lever Tthe toothed crowns 288, 288 co-operate e0 with the mode of operationdiscs 28|, 288 intended for adding operations, so that the amount set inthe amount dierential Wheels 88 by the keys I8 or by taking the totalfrom one of the individual totalizers is transferred additively to themain totalizer, provided the proper key in the motor key bank wasdepressed to cause the main totalizer to be engaged for this operation.In the position Zeroizing of the lever T the teeth 285, 288 co-operatewith the discs 282, 288 intended for taking the grand total, the totalcontained in the main totalizer being transferred to the indicating andprinting mechanism and the main totalizer being zeroized. A mode ofoperation Reading on" is not provided for the main totalizer.

The release and start of the operation of the machine is caused bydepressing one of the motor keys ISI. The above-mentioned lever |18,Figure 19, of the key excluding mechanism of the motor key board, isplvoted by a pin 2I8 to a slide 22|, the lower end of which is guided ona cross bar 2|9. This slide 22| is connected to the releasing lever 228by a pin and slot connection 222, 223. Upon depressing one of the motorkeys M, T' and Tr, the slide 22| is shifted upward due to theappurtenant key pin |12 penetrating between the respective twoneighboring rocking levers |68, whereby the releasing lever 228 is movedinto releasing position, this causing the start of the machineoperation.

A special slide 225, Figure 20, is provided for the idle operation keydenoted by Bl, as this key does not co-operate with the key excludingmechanism |83 of the motor key board. This slide 225 is guided on itstop on a ilxed cross bar 228 and has at its lower end a slot (not shown)in which engages the pin 228, Figure 19. of the releasing lever 228 inthe same manner as the slide 22|, The snde 22s has a slope face 221located in the range of the pin |12 of the idle key. by which face slide228 is moved when the key il depressed.

The blocking mechanisms Inorder to execute with security theaboveindicated calculating operations, the machine il equippedwithblocking mechanisms between the setting means in such a manner, that theoperator is forced in every state of the machine either to continue theoperation just commenced or in certain cases to select one of theoperations that can be continued.

yIn the rear of. the upper portion of the setting mechanism arerotatably mounted in the machine 1i frame three shafts, viz. a blockingshaft 228, Figure 8, a locking shaft 229, and a shaft 230. The blockingshaft 228 has rigidly mounted on it in the range of each row of amountkeys a lug 23|, Figures 8, 14, which co-operates with a pin 232 or thelike of a slide 233. The latter is hinged on its front end to the zerostop pawl 20, Figures 8, 15, of the respective row of amount keys and isguided by a link 234 pivoted on the machine trame. Upon an amount keyIII being depressed, the zero pawl is rocked as described above, and theslide 233 is moved backward. This causes the shaft 228 to turn inclockwise direction out of position of rest, in which it abuts on a stop236, Figure 8, under the action of a spring 235. In the range of themotor key board the shaft 228 carries a locking lug 231, Figure 20, thatcci-operates with a nose 238 of the slide 225 iniluenced by the idleoperation key Bl. When shaft 228 turns, lug 231 arrives before the nose238 and locks key Bl against being depressed. Inversely, the amount keysare locked, when by depressing key Bl the nose 238 has been shifted intothe path of lug 231 and thus prevents rotation of shaft 228.

Furthermore, the shaft228 carries in the range o! the two rows oftotalizer keys I to 9 and II) to I8 lugs 239 and 239 respectively,Figures l0, 16, 17, which in the position of rest of shaft 228 areopposite a stop 24| of a slide 242, Figures 10, 16, of the row oftotalizer keys I to 9, and opposite a stop 24| of a. slide 243, Figure17, of the row of, totalizer keys I0 to I8.

The slide 242, Figures 10, 16, is hinged to the zero stoppawl |68. Slide243, Figure 17, is hinged to the upper lever 244 of the key excludingmechanlsrn of the totalizer key row I0 to I8, to the latter of which theappurtenant zero stop pawl 245 is yieldingly connected by a spring 246.As long as no amount key I8 is depressed, the totalizer keys to I8 arelocked by the lugs 239 and 239'. Upon an amount key being depressed,these lugs are rocked upwards and release the stops 24 I, 24 I andtherewith the totalizer keys I to I8.

In order to permit only one of the totalizer keys I to |8 to bedepressed, a locking arrangement is provided between rows I to 9 and I||to I8. This arrangement consists in a sleeve 241, Figures 16, 17,mounted on shaft 228 and having a lug 248, Figure 16, which co-operateswith a pin 249 of the slide 242 of the totalizer keys I to 9. On theright, the sleeve has a nose 25|, Figure 17, co-operating with the stop24| of slide 243 of the row of totalizer keys I0 to I8. Upon one of thetotalizer keys I to 9 being depressed, the sleeve 241 is rotated inclockwise direction by the pin 249, Figure 16, and lug 248 agamst theaction of a. spring 252, so that the nose 25| arrives in the path of.stop 24|' and locks the keys I0 to I 8. Upon one of the totalizer keysI0 to I8 being depressed, the keys I to 9 are locked by the sleeve 241being locked by stop 24|', Figure 1'1, that has arrived above the nose25|.

The totalizer keys A to N are normally locked by a nose 253, Figure 18,which is opposite a lug 254 of a slide 256 hinged to the zero stop pawl255 of the key board A to N. The nose 253 is carried by a yoke 251,Figure 14, which is rockably mounted on shaft 228 and held in theposition shown in Figure 18 by a spring 258. The yoke 251 carries twoset screws 259 and 26|, Figure 14,

` the screw 259 abutting on lug 248, Figure 16of sleeve 241, whilescrew'26l abutson an extension 262,A Figure 17, of slide 243. Upon oneof the totalizer keys I to I8 being depressed, the yoke 251.11: swungagainst the action of spring 258,

Figure 18, and the nose 253 is moved out of the path of the lug 254, sothat one of the totalizer keys A to N is able to be depressed.

The slide 256, Figure 18, of the keys A to N cooperates with an arm 265rigid on sleeve 264 by means of. a pin 263. The sleeve 264 carries onits other end a nose 266, Figures 14, 19, which normally is opposite toa stop 261 of a slide 268 hinged to the upper lever |13 of the excludingmechanism of the motor keys M, T', Tr, and locks these motor keys. Uponone of the keys A to N being depressed, sleeve 264, Figure 18, is rockedin clockwise direction against the action oi a spring 269, the nose 266,Figure 19, thereby releasing the motor keys M, T and Tr.

As can be seen from the foregoing, firstly only the amount key I0 andthe motor key Bl is free, while all other keys are in locked state, andthat one of the motor keys M, T', Tr can only be depressed after thesuccessive depression of an amount key, of one of the totalizer keys Ito I8 and of one of the totalizer keys A to N. When an amount key isdepressed, the other keys of the respective row are locked by the keyexcluding mechanism |63, |12. The non-depressed totalizer keys arelocked partly by the appurtenant excluding mechanism |63, |12 and partlyby the mutual blocking members 248, 25| Figures 16, 17.

Inorder to lock also the amount keys of the rows in which no keys havebeen depressed, the locking shaft 229, Figure 19, 'carries a lug 21|which through an intermediate lever 212 co-operates with a pin 213 ofthe slide 268. In the range of the rows of the amount keys the lockingshaft 229 has rigid on it lugs 214, Figures 14, 15, on which abut underthe action of springs 215 locking arms 216 loose on shaft 229 andco-operating with extensions 211 of the slides 233. By depressing one ofthe motor keys M, T', Tr, the locking shaft 229 is rocked incounter-clockwise direction by the intermediate lever 212, Figure 19, sothat the locking arms 216, Figure 15, arrive behind the extensions 211and thus lock the amount key rows. In those rows, where an amount keyhas been depressed and consequently the extension 211 arrived below thelocking arm 216, the latter is retained, when shaft 229 is rocked thespring 21.5 being tensioned. After a motor key has been depressed, allamount keys are thus locked and of course also all other keys.

By'depression of the motor key BZ an idle operation of the machine isstarted, that serves to prepare the subsequent total-taking operation.In particular, the setting members 41, IIU, |92, Figures 9, 12,respectively, that happen to have been displaced from position of rest,are thereby returned and the two mode of operation levers T and O,Figure l, released.

The two mode oi' operation levers T and O carry pins 218, Figures 12,21, and 219, Figures 12, 22, over which engage under the action of aspring 281|, two pawls 282, 283 rigidly interconnected by a sleeve 28|mounted on shaft |46. A slope face 285 of pawl 282, Figure 21, is in thepath of a pin 286, Figures 12, 21, which is mounted on the disc |89 thatis rigidly fixed on the setting member |92. Upon the setting member |92being moved, in the idle operation, to its position under the motor keyBl, the group of pawls 282, 283 is lifted by the pin 286, Figure 2l,engaging the slope face 285. The levers T and O are now free to belowered. When the machine is now operated by depression of one of themotor keys M, T', or Tr, the setting member |92 is moved to anotherposi-

